Air Canada asks court to overturn maintenance ruling

MONTREAL — Air Canada has asked the country’s top court to overturn a Quebec ruling that would require the airline to keep its maintenance operations in the country. In its legal filing with the Supreme Court in Ottawa, Air Canada said that the appeal court’s ruling “jeopardizes” the main objective of privatizing the formerly government-owned airline - to create a “viable and competitive company.” Quebec launched its lawsuit against the Montreal-based airline after Aveos Fleet Performance, which did much of Air Canada’s aircraft maintenance, closed in 2012 in a move that laid off 2,600 employees, including about 1,700 in Montreal.